#include <stdio.h>

#define add_1( A , B ) A + B
#define add_2( A , B ) A - B
#define add_3( A , B ) A * B
#define add_4( A , B ) A / B

#define add_4(A , B , C) ((A) C (B)) 

int main(int argc, char const *argv[])
{
    int A = 10;
    int B = 20;
    char C = '+';


    return 0;
}


